config/seata-config-core/src/test/java/io.seata.config/FileConfigurationTest.java
<filename>config/seata-config-core/src/test/java/io.seata.config/FileConfigurationTest.java/*
 *  Copyright 1999-2019 Seata.io Group.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package io.seata.config;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

/**
 * @author slievrly
 */
class FileConfigurationTest {

    private Configuration fileConfig = ConfigurationFactory.getInstance();

    @BeforeEach
    void setUp() {
    }

    @AfterEach
    void tearDown() {
    }

    @Test
    void addConfigListener() throws InterruptedException {
        CountDownLatch countDownLatch = new CountDownLatch(1);
        boolean value = fileConfig.getBoolean("service.disableGlobalTransaction");
        fileConfig.addConfigListener("service.disableGlobalTransaction", (event) -> {
            Assertions.assertEquals(Boolean.parseBoolean(event.getNewValue()), !Boolean.parseBoolean(event.getOldValue()));
            countDownLatch.countDown();
        });
        System.setProperty("service.disableGlobalTransaction", String.valueOf(!value));
        Assertions.assertTrue(countDownLatch.await(2000, TimeUnit.MILLISECONDS));
    }

}
